Coal-drill



(No Model.)

D. GEISE.

GOAL DRILL.

No. 406,040. Patented July 2, 1889.

UNITED STATES PATENT OFFICE.

DANIEL GIESE, OF PEORIA, ILLINOIS.

COAL-DRILL.

SPECIFICATION forming part of Letters Patent N 0. 406,040, dated July 2, 1889. Application filed April 14, 1888. Serial No, 270,644- (No model) To aZZ whom it may concern.- gether they conjointly form a threaded open- Be it known that I, DANIEL GIESE, a citiingj, in which the tool-stock. bears and travzen of the United States, residing at Peoria, els. The top part of the section 1% is provided in the county of Peoria and State of Illinois, with a rectangular integral block 7., which, 5 have invented certain new and useful Imwhen the sections l C are brought together, provements in Coal-Drills; and I do hereby is adapted to be embraced by a flange Zon declare that the following is a full, clear, and the section (1, and connected thereto by means exact description of the invention, which will of bolts in, passing through the end walls of enable others skilled in the art to which it apsaid flange and engaging threaded openin 1o pertains to make and use the same. in said block. Each section I G has horizon- My inventionrelates to drilliiig-machines; tally extending from its side a transverse and it consists in the construction and combitrunnion n, designed to bear in the recess in nation of devices and parts hereinafter dcthe upper end of the adjacent standard Zr, and scribed and set forth, whereby a simple, effibe retained therein by means of a cap 0, de- 15 cient, and durable drillingmachine is protachably secured to said standard by suitable vided that is composed of comparatively but bolt devices. few parts, which,when in use, will occupybut A bevel gear-wheel D has its hub portion little space, and in addition permit the ready 1) seated in a recess or depression (1, formed application and removal of the drill-stock. at the mouth of the openingj, and the section 20 In the accompanying drawings, forming (I has integrally a lateral and forwardly-expart of this specification, Figure 1 is a pertending arm E, which carries at its end a spective view of a drilling-machine embodysmall transverse cylinder F, having a transing my improvements. Fig. 9 is an inverted verse perforation, in which bears a shaft carplan view showingin enlarged detail the pivrying at its inner end a beveled wheel G, 25 oted body, and Fig. 3 is a front view of Fig. 2. meshing with the wheel D, while the outer The main bracket of the machine comprises end of said shaft carries an operatingcrank II. a horizontal portion a and side standards I), I refers to the extended drill-stock, which each of the latter being recessed at its upper is threaded throughout its surface to engage edge to form half of a bearing. A bolt 0 dethe threaded opcningj, and is also provided o pends centrally from the portion (6, and has with an extended keyway 0', which is engaged swiveled thereon a looped end (I of a horizonby a spline on the gear-wheel l). tal brace A, composed of a bar twisted at its In operation the brace A is turned so as to end to form the loop and then spread to form secure a bearing against some suitable perthe diverging membersc c, which are pointed tion, and the tool or drill J is titted in. the 3 5 at their ends to positively engage anysurface socket .s' at the front end of the stock. Now, with which they may contact, and having by rotating the gear-wheel G, the wheel I) is spurs f to prevent too deep a penetration. caused to rotate, and by its spline and kcy- The frame or body in which the drill-stock Way-connection with the stock. rapidly rotates bears and travels is composed of two sections the latter, so that it, through its threaded en- 0 B C, the former being provided at its lower gagement with the opening is caused to adportion with ears g, which bear against the vance or recede, according to the direction of ends of the lower cylindrical portion of the rotation. section 0, and have openings which align with It will be noticed that the strain necessary an opening in said portion 71 to admit of the to forwardly feed the stock is in no way ex- 5 45 passage of a bolt 1', for pivotally connecting pericnced by the gear-whecl D, but is susthe lower portions of said sections 13 C to tained by the portion or part best calculated. gether. The central part of each section B C to withstand .it-to Wit, the body formed of has a longitudinally-extending recess semithe sections B 07 Anotherimportant advancircular in form and located 011 its inner side. tage connected with my improvement consists I00 50 Each of said recesses is internally threaded, in the fact that the sections B C may bcreadso that when said sections are brought to ily swung apart for the application or removal 10 outer portions of said members diverging'from each other and havinglaterally-projecting spurs 0r projections, substantially as and for the purpose set forth.

In testimony whereof I affiX my signature in presence of two Witnesses.

DANIEL GIESE.

Witnesses:

LESLIE D. PU'IERBAUGH, BRUCE R. FRANCIS. 

